SCIENTIFIC COMMITTEE, OCTOBER 13. 



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sulphate of iron was changed for perchloride of iron, and the 

 sulphate of copper was dissolved in distilled water. The plants 

 were watered to the same extent that they would have been 

 under ordinary conditions of growth. August 1. — All the plants 

 are now in flower. All the flowers are quite white, and all the 

 plants are quite healthy. September 1. — All the plants are 

 quite healthy, and there is no visible difference between them. 

 October 1. — All the plants are quite healthy, and still there is no 

 visible difference between them." 



The Rev. W. Wilks reported thus :— " On June 24 ten 

 plants of a white-blooming Zonal Pelargonium were received. 

 They were all treated exactly as described in Dr. Russell's report. 

 After the plants were repotted they were for four days placed 

 under the stage of a close fern house, and then brought up on 

 to the stage of a very light and airy greenhouse, where they have 

 stood till this date, October 13. At the commencement plants 



1, 3, 4, 5, 7, and 8 were somewhat stronger than 2, 6, 9, and 10, 

 9 and 10 being the two to which nothing was added, and which 

 have been watered with ordinary water. Each plant has had 

 about 20 pints of fluid. Results : — None of the plants flagged 

 at all from the repotting, beyond losing one or two of the 

 lower leaves. All have bloomed well throughout the whole 

 of the season, and are still carrying fine trusses. No. 1 lost one 

 limb from mildew, but this was probably the result of pure 

 accident, and should not be attributed to the special treatment. 

 It has since made new growth, which is stronger and more 

 vigorous, and the foliage distinctly larger than any of the others. 

 Nos. 2, 8 are rather stronger, and the foliage darker than the 

 remainder. No. 7 has every leaf showing all the veins and fibres 

 •dark green and the interspaces clear pale yellow ; the leaves are 

 also somewhat small, but otherwise they are crisp and look 

 perfectly healthy. The colour of the flowers does not appear to 

 have been in any case or in the smallest degree affected." 



" The numbers refer to the different salts with which the 

 respective plants were watered, viz.: 1. Ammonium sulphate; 



2. Zinc nitrate; 3. Copper sulphate; 4. Chromium acetate; 

 5. Manganese chloride ; 6. Iron perchloride ; 7. Cobalt nitrate ; 

 8. Nickel nitrate." 



Rev. W. Wilks's Experiments with Apples.— Three young 

 Cox's Orange Apple trees were chosen, situated on one border, a 



